Glossary

Select a subject
Search for a definition...
Back to the Glossary
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
R
S
T
U
V
W
X
Y
Z

Looking for a quick definition?

We’ve got loads of key subject terms in our subject glossaries. There are three ways of finding what you are looking for:

  • First click on the letters of the alphabet to browse for terms.
  • Select a subject from the drop-down menu above to filter the terms by Subject.
  • Or lastly, type the term you are looking for into the search box.

EXAMPLES

Here are some examples of the kinds of definitions you’ll find on this page.

Subject:

an injection of a weakened or dead pathogen into the body to build up immunity against a disease...

Subject:

an antigen preparation that stimulates the immune system to give protection against a particular...

Subject:

a sac-like structure in plant cells that contains the cell sap. It supports the cell and helps...

Subject:

a leaf with certain areas that lack chlorophyll. The leaf therefore contains both green and non-...

Subject:

regions or bundles of vascular tissue consisting of xylem and phloem separated by cambium.

Pages